
/*
 * Copyright (c) 2024 坚果派
 * 
 * 公众号：nutpi
 * 电话：17752170152
 * 官网：https://www.nutpi.net/
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import 'package:flutter/material.dart';

class CountdownTimer {
  final DateTime startTime;
  final DateTime endTime;
  final String label;
  final bool isRunning;

  CountdownTimer({
    required this.startTime,
    required this.endTime,
    this.label = '',
    this.isRunning = false,
  });

  Duration get remainingTime {
    final now = DateTime.now();
    if (now.isAfter(endTime)) {
      return Duration.zero;
    }
    return endTime.difference(now);
  }

  CountdownTimer copyWith({
    DateTime? startTime,
    DateTime? endTime,
    String? label,
    bool? isRunning,
  }) {
    return CountdownTimer(
      startTime: startTime ?? this.startTime,
      endTime: endTime ?? this.endTime,
      label: label ?? this.label,
      isRunning: isRunning ?? this.isRunning,
    );
  }
}